大倾角俯采综放面防止煤炭自燃技术应用

Study of applications of spontaneous combustion prevention technology in high inclination-angle underhand stopping working faces with comprehensive mechanized caving method

结合葛亭煤矿的实际情况,分析了矿井综放面采空区煤炭自燃“三带”确定的主要指标及这些指标在“三带”内的浓度范围,确定了“三带”的具体范围,给出了建筑阻燃墙后“三带”范围的变化,指出了“三带”确定的影响因素,为及时掌握采空区煤炭自燃的发展情况、采取相应的措施提供了依据。对大倾角、高瓦斯、俯采综放面的自然发火防治措施进行了研究,通过研究总结完善了矿井的防灭火理论和措施,使之更贴近现场,符合矿井需要。

Considering the practical situation of Getting colliery, main indexes to determine three zones in goafs of working faces with comprehensive mechanized caving method and the variation ranges of concentration of these indexes in the three zones are analyzed, and the specific ranges of the three zones are given also. The variation of ranges of the three zones after the construction of fire-retardant walls is given, and the influencing factors of the determination of the three zones are pointed out. All these are significant in mastering the development state of spontaneous combustion of coal in goaf and in adopting corresponding measures in time. In the paper, measures of spontaneous combustion prevention for high inclination-angle, highly gassy and underhand stoping working faces with comprehensive mechanized caving method are studied, and from the result, theories and measures of fire control for mine are summarized and perfected. The distance between theories and locale is shortened, and the theories and measures accord with mine better.